【Java】MD5编码加密-code片段

package cn.szy.zths.basic;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5 {
/**
* MD5加密
*
* @param plainText 加密文本
* @return 返回加密后的文本
*/
public  String Md5(String plainText) {
String password = null;
try {

MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes());
byte b[] = md.digest();
int i;

StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < b.length; offset++) {
i = b[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
}
password = buf.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return password;
}
}